Island



@wat A @Inline CHARLES L. POTTER, OF PROVIDENCE, RHODE ISLAND.

Letters Patent lilo. 110,070, dated December 13, 1870.

IMPROVEMENT IN DEVICES FOR ATTACHING THE SHANKS TO MINERAL ANDCOMPOSITION BUTTONS.

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom 'itunuty concern.-

13e it` known that I, CHARLES L.`Io'11nu, of the city and county ofProvidence, in the State ot' Rhode Island, have invented a new anduseful Improvementin Devices for Att-aching the Shanks to Mineral andComposition Buttons; and I do hereby declare that the followingspecification, taken 'in connection with the drawing making a part ot'the. same, is a full` clear, and exact description thereof. i

Figure 1 is a side view ot' the button.

Figure 2 shows, in section, the device by which the shank is attached tothe button.

'Figure 3 is a view of the under side of the button the spiral portionof the shank being removed.

Aconvenient and very common way of attaching pearl or mineral-coinposition buttons of different kinds to clothing is by means ot -ahelical shank, the end of which being entered into a small circularbutton-hole, the button is t-lu'ncd with the fingers until the shank hasbeen advanced into the hole through all the convolutions of the-spiral.

Much ditiiculty has been experienced in attaching such shanks tothe headso as to prevent them from becomingloosened by the operation of screwingin and out the button, and it is the purpose of my invention to furnishan improved means for effecting such attach men t.

In the drawing.-

y AV represents a. button-head of any preferred form,

lthe material heilig pearl, glass, mineral-compositieu, or othermaterial commonly used in suoli manufactures, with which solder cannotbe. used.

B represents the common helical shank.l

The usual mode ot attachment has heen tosink a dorata-il circular cavityinthe bottom ot' the butt-on aiidiusert therein a plate, a.,corresponding in form 'and size, to be held by 'cement or burnished downat the edge. To this platethe shank is soldered.

I ina-ke use ot' the same'device, but in addition thereto I employ ametallic'cross-bar. I), which is soldered to the plate a. or to 'theshank, and is to be let into channels cut in the bot-tom radial to theshank.

The ends ot' such cross-bar should also he bent, so

' as to enter holes drilled in the bnttonhead at the end of suchchannels.

f After the plate a has been set in its cavity in the Ausual way the`cross-bar should be burnished down Witnesses:

IE'rnn F. HUGHES, Onvrnnn Peck-iran.'

